How to fix oledb timeout connection errors

Question

ChatGPT

Log in

You said:

Hello all, I'm facing an issue with an OLED linked server timeout errors,this issue is facing especially when an index job is running for a example testdb(this db tables related to application logs etc)and we are using SQL server 2022 standard edition. And we don't have linked server issues till Friday when we run index job that period I'm getting timeout errors,and I increased query timeout login timeout,can someone please share suggestions and ideas,thanks

ChatGPT said:

Hi! It sounds like you're facing linked server timeout errors in SQL Server 2022, which coincide specifically with index maintenance jobs on a database like testdb that holds application log data. Since the issue only started recently and wasn’t present before Friday, here are several angles to investigate and steps to try:

---

1. Index Job Performance Impact

When your index maintenance job runs, it likely:

Consumes significant CPU/disk IO, causing contention.

Triggers locking/blocking on the testdb tables, which could affect queries using the linked server.

Suggestions:

Run index rebuild/reorganize during off-peak hours.

Use WITH (ONLINE = ON) if supported by your edition (Standard doesn’t support online rebuilds, unfortunately—this is Enterprise only).

Split index jobs to handle fewer indexes at a time or reorganize instead of rebuild where fragmentation is low.

---

2. Monitor and Analyze Blocking

You may be hitting blocking or deadlocks during index maintenance, affecting linked server queries.

Try:

Run this during the issue window:

sql
Copy code
EXEC sp_who2
EXEC sp_lock

Or better: use Extended Events or SQL Server Activity Monitor to spot blocking sessions.

---

3. Review Linked Server Settings

Since you're already increasing Query Timeout and Login Timeout, also check these:

Enable "RPC Out" on the linked server.

Check if the collation or data conversion is causing extra resource usage during index maintenance.

Use OPENQUERY instead of direct 4-part naming ([LinkedServer].[DB].[Schema].[Table]) for performance consistency.

---

4. Investigate Recent Changes

Ask:

Were any patches, statistics updates, or increased application logging changes made last week?

Is there more data in testdb now, especially in log tables?

Any query plan changes or new triggers/stored procedures deployed?

---

5. Consider Resource Bottlenecks

Monitor disk IO, memory, and CPU usage during the index job.

Use Performance Monitor (perfmon) or sys.dm_os_performance_counters.

---

6. Use Wait Stats for Root Cause

Run this to look for high waits:

sql
Copy code
SELECT wait_type, SUM(wait_time_ms) AS WaitTimeMS
FROM sys.dm_os_wait_stats
GROUP BY wait_type
ORDER BY WaitTimeMS DESC;

Look for waits like LCK_M_, CXPACKET, PAGEIOLATCH_, etc.

---

7. Logging & Retry Logic in Linked Server Queries

If you control the queries using the linked server, consider adding retry logic or checking the timeout threshold in the calling application or stored procedure.

---

If you can share the index job script, linked server query, or execution plan snippet, I can give more focused recommendations.

Would you like a script to monitor blocking sessions or detect long-running linked server queries during the index job?

You said:

For the above question can you rewrite that I verified no blockings

ChatGPT said:

Sure! Here's a revised version of your original message with a note that you've already verified there are no blocking issues:

---

Hello all,

I'm currently facing an issue with a linked server timeout, specifically during an index job execution. This occurs when running a job on the testdb database (which contains application log-related tables). We're using SQL Server 2022 Standard Edition.

We didn’t experience any linked server issues until this past Friday. Since then, whenever the index job runs, we're encountering timeout errors on the linked server. I've already increased the query timeout and login timeout settings, and I also verified that there are no blocking sessions during the index job.

Has anyone experienced something similar or have any suggestions or ideas to resolve this?

Thanks!ChatGPT

Log in

You said:

Hello all, I'm facing an issue with an OLED linked server timeout errors,this issue is facing especially when an index job is running for a example testdb(this db tables related to application logs etc)and we are using SQL server 2022 standard edition. And we don't have linked server issues till Friday when we run index job that period I'm getting timeout errors,and I increased query timeout login timeout,can someone please share suggestions and ideas,thanks

ChatGPT said:

Hi! It sounds like you're facing linked server timeout errors in SQL Server 2022, which coincide specifically with index maintenance jobs on a database like testdb that holds application log data. Since the issue only started recently and wasn’t present before Friday, here are several angles to investigate and steps to try:

---

1. Index Job Performance Impact

When your index maintenance job runs, it likely:

Consumes significant CPU/disk IO, causing contention.

Triggers locking/blocking on the testdb tables, which could affect queries using the linked server.

Suggestions:

Run index rebuild/reorganize during off-peak hours.

Use WITH (ONLINE = ON) if supported by your edition (Standard doesn’t support online rebuilds, unfortunately—this is Enterprise only).

Split index jobs to handle fewer indexes at a time or reorganize instead of rebuild where fragmentation is low.

---

2. Monitor and Analyze Blocking

You may be hitting blocking or deadlocks during index maintenance, affecting linked server queries.

Try:

Run this during the issue window:

sql
Copy code
EXEC sp_who2
EXEC sp_lock

Or better: use Extended Events or SQL Server Activity Monitor to spot blocking sessions.

---

3. Review Linked Server Settings

Since you're already increasing Query Timeout and Login Timeout, also check these:

Enable "RPC Out" on the linked server.

Check if the collation or data conversion is causing extra resource usage during index maintenance.

Use OPENQUERY instead of direct 4-part naming ([LinkedServer].[DB].[Schema].[Table]) for performance consistency.

---

4. Investigate Recent Changes

Ask:

Were any patches, statistics updates, or increased application logging changes made last week?

Is there more data in testdb now, especially in log tables?

Any query plan changes or new triggers/stored procedures deployed?

---

5. Consider Resource Bottlenecks

Monitor disk IO, memory, and CPU usage during the index job.

Use Performance Monitor (perfmon) or sys.dm_os_performance_counters.

---

6. Use Wait Stats for Root Cause

Run this to look for high waits:

sql
Copy code
SELECT wait_type, SUM(wait_time_ms) AS WaitTimeMS
FROM sys.dm_os_wait_stats
GROUP BY wait_type
ORDER BY WaitTimeMS DESC;

Look for waits like LCK_M_, CXPACKET, PAGEIOLATCH_, etc.

---

7. Logging & Retry Logic in Linked Server Queries

If you control the queries using the linked server, consider adding retry logic or checking the timeout threshold in the calling application or stored procedure.

---

If you can share the index job script, linked server query, or execution plan snippet, I can give more focused recommendations.

Would you like a script to monitor blocking sessions or detect long-running linked server queries during the index job?

You said:

For the above question can you rewrite that I verified no blockings

ChatGPT said:

Sure! Here's a revised version of your original message with a note that you've already verified there are no blocking issues:

---

Hello all,

I'm currently facing an issue with a linked server timeout, specifically during an index job execution. This occurs when running a job on the testdb database (which contains application log-related tables). We're using SQL Server 2022 Standard Edition.

We didn’t experience any linked server issues until this past Friday. Since then, whenever the index job runs, we're encountering timeout errors on the linked server. I've already increased the query timeout and login timeout settings, and I also verified that there are no blocking sessions during the index job.

Has anyone experienced something similar or have any suggestions or ideas to resolve this?

Thanks!